Delay ForbidInferringPostponedTypeVariableIntoDeclaredUpperBound to 2.0

#KT-57395 Fixed
Related to KT-47986

compiler/testData/diagnostics/tests/inference/builderInference/multiLambdaRestriction.kt

@@ -7,7 +7,7 @@ fun <T> List<T>.myGenericExt() {}
 fun <R> a(first: R, second: (List<R>) -> Unit) {}
 
 fun test1() {
-    a(
+    <!INFERRED_INTO_DECLARED_UPPER_BOUNDS!>a<!>(
         buildList { add("") },
         <!BUILDER_INFERENCE_MULTI_LAMBDA_RESTRICTION("R; a")!>second = {
             it.myGenericExt()
@@ -67,4 +67,4 @@ fun test4() {
         <!BUILDER_INFERENCE_MULTI_LAMBDA_RESTRICTION("D; buildPartList")!>left = { add(1) }<!>,
         <!BUILDER_INFERENCE_MULTI_LAMBDA_RESTRICTION("D; buildPartList")!>right = { add("") }<!>
     )
-}
+}